IX series and although much good planning had been done, the additional shots upset the planning, The sampling crews used up their allowable radiation dosage and simply had to be replaced as they could not be used on any additional sampling missions. A sampling pilot is truly a sort of a super pilot--they're not easy to find. Then too, the shots . often came so close together that the needed aircraft could not be allowed to ‘cool off'--it had to be decontaminated immediately after landing from a sampling mission. This quick decontamination increased the replacement rate among the decontamination crews and men with less than the optimm decontamination training had to be used, Even with quick decontamination we occasionally could not have the proper plane for the mission in commission so had to substitute planes which were ready. This situation forced the B-57D aircraft to fly B-57B missions, thus speeding up the replacement of B-57D crews. Regardless of the importance of getting acceptable samples, the obtaining of samples is not worth the risk of excessive radiation to aircrewmen,. 23 Consequently, the pilots and observers had to be rotated, With the sampling element participating in all but two shots (TEAK and ORANGE), maximum radiation dosages were quickly reached by the sampler crewmen, However, discussions with air sampling director, Paul W. Guthals, pointed out some of the difficulties of the operation.“ "There mst be a high degree of rapport between the LASL controller, the military controller and the sampling pilots, Time is so fleeting during a sampling operation, the controller and the sampling pilots have so many simltaneous tasks to accomplish that they mst practically practice mental telepathy. The mere start of a sentence of instructions over the radio is often sufficient to achieve the maneuver change required. If full and complete instructions were required, time would be insufficient to achieve the maneuver, Dependable communications are an absolute mst. 192 SWEH -2 -0034, 4 PELHO +,